See at a glance how much energy appliances use and what they're costing you. The Energy Meter w/LCD Display accurately measures energy consumption of home and office electronics and appliances. This easy-to-use plug-in device automatically calculates energy costs to show you which appliances are costing you the most and to help you save money. Two 1.5V (LR44/AG13) button cell back-up batteries are included.

View Multiple Data Fields at Once
The LCD displays three separate data fields at once. View wattage, voltage, and current (along with maximum current and wattage) in the top field. The middle pane shows the total energy, energy price and total cost. You'll see the hours of usage in the bottom pane. Additional features include an overload warning display and buzzer as well as included batteries for memory protection.

Nice meter, easy to set up and use. Would be even better if the display was backlit. Very reasonably priced.

Posted on 6/11/2014

Review of 1139 Review by NEIL

Review of 1139NEIL

Rating

Easy to use but the display is tiny and not backlighted. Be prepared to have a flashlight to read it! Using this device we have cut more than a $1/day from our base electrical use.

Posted on 1/29/2014

Review of 1139 Review by BERT

Review of 1139BERT

Rating

Outstanding, does what I expect and the feature/function set is a full match for my purpose:
1) Measure the average, peak and current power usage in Amperes and Watts to help me size a generator.
2) Identify power hogs using more power than intended or designed for.
This unit is not heavily advertised in the market like several others, but it is designed well with the user in mind and is more functional than more expensive units.

Posted on 12/18/2013

Review of 1139 Review by NELSON

Review of 1139NELSON

Rating

Cheap feel and controls but so far it works.

Posted on 2/18/2013

Review of 1139 Review by ROBERT

Review of 1139ROBERT

Rating

Good product, good company with which to deal.

Posted on 12/15/2012

Review of 1139 Review by JOHN

Review of 1139JOHN

Rating

I love this unit to keep track of kh hours on my space heater.

Posted on 12/5/2012

Review of 1139 Review by MICHAEL

Review of 1139MICHAEL

Rating

works great

Posted on 8/31/2012

Review of 1139 Review by Brian

Review of 1139Brian

Rating

The EM100 works great! I have been looking for something like this for many years. Two improvements I would suggest are: Incorporate a real time clock that calculates how long your test went on as opposed to how long your appliance drew currentOther than this you must record your own start time and end time. Secondly, the device takes up two spots on a power bar or electrical outlet. Every home should have one of these!

Posted on 4/2/2012

Review of 1139 Review by Brian T

Review of 1139Brian T

Rating

The EM100 works great! I have been looking for something like this for many years. Two improvements I would suggest are: Incorporate a real time clock that calculates how long your test went on as opposed to how long your appliance drew currentOther than this you must record your own start time and end time. Secondly, the device takes up two spots on a power bar or electrical outlet. Every home should have one of these!

Posted on 4/2/2012

Review of 1139 Review by DAVID

Review of 1139DAVID

Rating

We purchased six EM100 meters to loan out to utility customers. Initial tests are positive.
PROs:
usable features,
ease of use,
battery backup,
great price.
CONs:
some displayed items are very small,
unit has no cord so it is inconvenient to see display while in use (we plug it into extension cord to solve this).

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